The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
How did Zheng He react when the king of Sri Lanka demanded gold?
The King of Sri Lanka had invited Zheng He to his court in 1409, but once there, the King demanded too much gold as a tribute. He denied the gold and the king sent troops to attack He's fleet.
So what Zheng He did was to send approximately 2000 of his soldiers to surprisingly attack the capital city of Sri Lanka and then captured the king and his entire family. He had defeated the king and his troops. He took the prisoners back with him to China but the Chinese emperor pardoned the prisoners.